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What's the problem with red flashing when power off?

Last Updated on：2023-01-30 09:54:19

This problem is the problem of red light beads. This is because the turn-on voltage of the red light beads is about 2V, and the turn-on voltage of the G and B beads is about 3V. During the process of turning off the lights and powering down, when a certain critical voltage is reached, The GB light is not on, but the red light bead has a low conduction voltage, and the red light can be on at this time, so it will flash red visually. Since the VF of the red light beads is low, the red light will be extinguished at the end of the power off, and the red light will appear to be flashing. This can be optimized by electrolysis and resistive acceleration of electrolytic discharge in the RGB power supply, but cannot be completely avoided.